Disk wheel



May 6 1924. 1,493,255

G. H. FORSYTH I DISK WHEEL FiledJuly 11 1921 Patented May 6, 1924.

UNITED STATES item55.*

PATENT omer..

GEORGE H. roRsYTH, or oHIGAGo, immers.

l DfIsK WHEEL.

Application `filed July 11, 1,921: sel-iai No. 484,009. i

To @ZZ whom .it may concer/n:

IBe itknown thatv I, ,GEORGEII FoRsYfrH,

The present Ylnventlon vvrelates to disk wheels, wherein the disk forming the body of the wheel .and ther-laterally extending felly portion are `,one or both resiliently yieldable in the plane of the wheel and placed and vme,intand under 4di.@meerrally applied reactionary stressby the rim or other constrictire peripheral member- This application relates to subjectkmatter.. carved out of my former, applications which have matured into Patents Nos. 1,373,184: k,and l1,' 73,1j85, issued 'March 29, l119 21,`but is directedv more particularly to that feature of the improvement in stressed disk wheels characterized by the assembly with the disk of a constrictive member independent of the demountable rim, which will retain the disk .under uniform stress vwhen the rim is removed'.

In order that theinvention may be readily understood I have in the accompanying drawings andin the following detailed de; scription predicated thereon set forth pre'- ferred and .alternative embodiments of the invention. As, obviously, the invention may be embodied in other forms diering in detail from those illustrated and described, it

will 'be understood that the embodimentI chosen by lway of illustration and as a basis for the language used in the description are not to serve as unnecessarily limiting the invention kdefined in the claims.

In the drawings,

Fig. 1 is a fragmentary radial section through the peripheral portion of a wheel showing a constrictive band arranged about the marginal portion of an integral felly;

Fig. 2 is asimilar view showing a constrictive band substantially co-extensive with the felly; .and

3 Vshows Va constrictive band forming the felly of the wheel.

IjIaving reference to Eig. l1 of the drawing, the diskbody 11 of the wheel is shown as provided with .a shoulder 12 near its periphery serving as a seating support for'the rim-positioning and retaining clip member` 13, .the peripheral portion y.of the disk eX- tending vlaterally at an angle to form a felly 14,-bothtl1e' felly and disk body being yieldable diametrically.

Normally the felly'portion 14 of the wheel is of a diameter greater than the interior di. ameter of the Ademountable rim 15. In order to place and maintain the same under inwardly directed compressive stress the conu strictive band 16 is assembledfwith the wheel by aY lateral Vmovement from the left tothe right as shown in Fig. 1 until its beaded endV 17 riding up upon the inclinedface of the felly 'snaps over the marginal portion 18 thereof to prevent any backward movement. The outer'circumference of the band 16 is substantially lthe same as the inner circumference of therim 15 and forms a firm seat therefor as the rim is laterv assembled laterally therewith. t

The rim being `in placeupon the wheel, a spring c lip 13, which maybein the form of individual members or an annulus, is placed in position beneath and bearing upon the front face of the rim and drawn home by means of the'nuts 19 on the bolts 20, the heads V21 of. which bear upon the rear face of the disk.

To ,prevent disassociation lof the bolts 20 from ythe wheel, they are, in the course of manufacture, after inserting in the apertures of the disk, provided with spurs 22 which prevent their withdrawal from the rear. To hold them securely against turning, the shank of the bolt at 23 is squared and the configuration.

Having reference to Fig. 2 of the drawings, it will be observed that the` dished disk 25 is illustrated provided with a rear radial rib 26, the peripheral portion of the disk being laterally extended to the `rear at an inclination to form' the lfelly portion 27 termi* nating at 28. The felly of the disk when made is of slightly greater diameter than in the position illustrated, and is lplaced under radially directed compressive stress by a constrictive band 29 having an upturnedfrear rim retaining portion 30 andan inner lshoulderl, as also an inwardly directed front flange 32. `This constrictive band 29 is forced upon the' disk `laterally from the left as shown'in Fig. '2, compressing the disk 25 andthe felly 27 until it snaps overthe edge of the felly atr28 which then forms-an' abutment for the shoulder -81 of the band. The

band is so proportioned'that at thisy time the.`

'flange 32 bears against the frontface of *the perture 24 of the ldisk is ofcorresponding llO i disk, and the disk and felly are held at all times under stress. The demountable rim 33 is adapted for application to the wheel in the usual way by a lateralpmovement, a rim positioning and retaining clip 34 being employed, which clip has on its inner face a.v

` its contiguous .relation to the rib 26.

In F ig. 3 is shown a lform of construction in which the forwardly dished disk has 11o-,integral felly member associated therewith. The disk shown in this figure has its peripheral margin 41 snapped within the recess 42 upon the inner face of a constrictive band 43 which forms the felly of the wheel. The disk is placed under stress and as soon as it enters thel recess 42 it maintains a firm seat but is held .from resuming its former diameter by the constrictive effect of the band '43. T he strut member 44 is arranged at intervals about the wheel having its upper l p rear edge snapped within the recess and bearing against the shoulder 45 along the rear margin of the felly member 43, while in its forward portion it is provided with a boss 46 seated within an aperture 47 of the wheel. The boss 46 is interiorly threaded for engagement with the bolt 48 which serves to position and retain the rim positioning clip 49, the nose 50 of which rides upon the inclined surface 5l of the constrictive felly 43.

I claim:

l'. In a wheel, the combination with a disk body, a felly7 member, and a tire carrying rim, of a peripheral constrictive member for maintaining the disk under radially applied compressive stress independently of the rim.

2. In a wheel, the combination with a disk body of curved diametric cross-section, a felly member, and a tire carrying rim, of a separate peripheral constrictive member for maintaining the disk under radially applied compressive stress.

3. In a wheel, the combination with a-disk body of reversely curved diametric crosssection, a felly member, and a tire carrying rim, of a peripheral constrictivev member for maintaining the disk under radially applied compressive stress. f

, V4. In a wheel, the combination with a disk body diametrically yieldable, a felly member, and Va tire carrying rim, the disk having a slightly greater diameter when unstressed `thantthe interior diameter of the constrictive member whereby 'in| assembled'relation the constrictive member maintainsthe disk under inwardly directed radial stress.

5. Ina wheel, the combination with a disk body diametrically yieldable and having an obliquely disposed peripheral portion, a felly member, and a tire-carrying rim, having a constrictive band of slightly lessdiameter than the normal diameter of the peripheral portion of the disk when unstressed, whereby inv laterally-assembled relation said band maintains the disk under inwardly-directed radial stress.

6. In a single disk wheel, the combination with a steel disk body having an integral laterally and obliquely extending rim-supporting vportion, and `a tire-carrying rim seated thereon, of a constrictiveffband assembled between the .rim and rim-supporting portionv and maintaining the latter portion of the disk under radial compression.

7.' In a vehicle wheel,the combination with hub and rim-portions, of an intermediate steel disk body having an obliquely disposed peripheral portion of slightly greater diameter when unstressed than the rim portion and underlying and supporting the same, and a constrictive band surrounding the peripheral portion of the wheel beneath the rim and maintaining the 4wheel, under inwardly directed radial stress.`

8. In a wheel,the combination with a disk body, an inwardly yielding felly or'fixed rim portion, and a tire-carrying rim, of an encircling band adapted to be seated upon the yielding felly and to maintain the latter under inwardly-directed compressive stress.

9. In a wheel, the combination with a disk body, of a felly member, and a tire-carrying rim, the felly assembled with the disk body in compressive relationto maintain the lati ter under stress, and strut members bearing upon the disk body andl beneath the overhanging edge of the felly whereby to marginally support the latter.

l0. In a wheel, the combination with a disk body, of a felly member, and a tire carrying rim, of a rim positioning yand retaining member, and bolts extending through the disk body andthe tire retaining member from the rear and provided with adjusting nuts bearing upon the4 face of the tireretaining member, the Shanks of the bolts upset against the face of the diskto prevent disassociationof the disk and bol-ts.-

11. In a wheel, the combination with a radially yieldable disk body, of a peripheral constrictive` member permanently assembled therewith for maintaining the same under radially applied compressive stress.

l2. In a wheel, the combination lwith a disk body including a vflanged 'felly member, of a peripheral constrictive,member permanently assembled with the fellyflange for maintaining the disk under radially applied compressive stress; v

In testimony whereof I have hereunto signed my name. f

GEORGE n. roRsYri-i. 

